Stop mechanism for sheet-feeding apparatus



June 26, 192s. 1,675,246

A. BROADMEYER STOP'MECHANISM FOR SHEET FEEDING APPARATUS Filed Jan. 19, 1927 ZYSheecs-Sheet l June 26, 1928.

A. BRoAltm/IEYERl STOP MECHANISM FOR SHEET FEEDING APPARATUS Filerd Jan. 19. 1927 2 sheets-sheet 2 y sheets 6 is' placed.

Patented June 26, 1928.

UNITEDV NATION or PENNSYLVANIA.

s'iofv nE'cnANrsvi son snnnnrannnre AfARATUs'.

Appneatiaunied lJlfnmiy' 1a. i927. semi No. 162,162.

The present invention relates to meansor stopping the feed of paper sheets when an excessive number are simultaneouslvdelivercd to the conveying apparatus.

Ineert-ain aspects, the invention may be considered :as lan improvement. onthe `apparatus disclosed in myfapplication, Serial No. 747 ,564, filed Nov. 23,` 1924. n A

The object is to providea novel formk of mechanism, by which the feeding" Ymeans lis iliade inactive and in which a stop iseniployed that engages the excessive sheets and holds them against movement.

In the accompanying drawings:

Figure 1 isa View in elevationo'f the preterred embodiment of the invent-ion,

Figure 2 is a perspective view of thesame,

vFigure 3l is a horizontal section-'al view taken on the line 3-3 of Figure 1l, v c

Figure 4 is a detail sectional viewthrough al mounting' olf one Aot' the presser rollers.

In the `embodiment ldisclosed, 'a portion ot a table is illustratedat 5, on'which a pile of It will rbe` understood that any fdesired type of tablefelevating mechanism may beremployedJ Behind said table is a suitable conveyer, shown vat 7,' forV carrying sheets delivered from the pile'6 to as'uitabl'e apparatus ,tor operating on said sheets. interposed between the table 5 and' the conveyor` 7 is a transfer' roll'er 8 that constitutes a part of the conveying mechanism.

For vthe purpose of L:feeding the Vsheets successivelyv from the pile' v6, an;l siiitable means may be employed. The present embodiment shows a suction roller 9 ofthe typedisclosed in the patent-granted to me' on May 13, 1924, No. 1,494,303'. Suction is created through 'this rollenbym'eansof a .conduit 1() leading from asu'ct'ion pump, and l the conduit is locateda relief ve'nt 1'1. The vent 11'is normallycl'osed'bv/a 4slide valve 12 ca'r'ri'd on a reciprofcatory Abar 13 that 'is v the side of the cohduit'lO. V

`Lc'ated'above the receiving end of. the 'conveyor 7 is 2ajock shaft 15, having a longitudinal keyvvay A collar 17 mounted on therock lshaft 15, is provided with y'a key 118 engaged in the kejfway, so thatvthe colslidabl mounted in ways 14 formed upon lar will vrotate with the rock shaft.` This collar is providedwith oppositely outstende` a'its 19 2G.- Th'e A159 terminates yat its ou'tenend in a vertical sleeve 2.1Qri'n which is slidably mounted a stem 22.'v Tfhe stemha'sat itslower end ahead 23',V that d is adapted lto move downwardly intoconf tacit with vthe'iconveyor 7, or withsheets on said conveyor, when', the farml 19 swings downwardly. ,A spring .24 'is interposed beitween 'the head 23 and sleeve-4.21, and serves to y'ldi-ngrly,urgethe head 23 downwardly. A stopl'coll'ar 25, iXed to the upper end of the stem 22, andv abutting against ,thenpperend of the sleeve 21, serves to limit' the downwardA movement of the head and "stem withrespect tothe sleeve.. In orderito unge the arm 1-9. and head 23 downwardly Vthere is 'secured to the rockshaft', an. lupstanding arm 26 having' an offsetportin.- 27,]on which is adj'ustably/moiinted a weight 28.

. Extending over Athe'rollerfis al '-siipp'orting' bracket 29,.a`nd 'said bracketfhas pivotal.- ly mounted thereon, as indicated al1-30', a bell crank bracket, comprising an a'rm 31 and an arm 32. 'The arm 31' is interposed between a .spring` 33 supported on an ear 340i the bracket '29 and an 'adjusting.screw` 35 threaded through an ear 36 on said 'bracket 29. A lock nut 37 serves to vsecurethe yscrew 35 against accidental movement.. .The other arm 32 is provided wi Y standing pivot pin 38. on which isA jonrnaled a detent arm '39.' lThe upper end ofi this 40 vis threadeda locking; 'screw.41,tlie lower end ofw'hich isadaptedto yseat in a notch 42, formed in the upper Asid 'of the arm 20. Thejarmj39 extends below theqpivot "38 .and is provided with a horizontal pin 42a.;r Jiirthy out;

.arm 39 is offset andfoverhangs thearrh 20. Y 'as shownv`11340, and ethrough said oiiset end naled on the' pivot BSJalongside the 'arm 39 is fa detector can 43, the eccentric peripheral edge of whi'chcooperates Ywith the rollerv 8. This detector 43 yha'sah arcuate slot 44Ltherefin in which ythe pin 42a is engaged, the arrangement being "such V'that the pin 42a is j normally at a poin't between the ends v'ofthe slot 44. The/31511142 has also connected thereto `a link 45 "that4 is pivoted', as shown at 46, to the slide fear 1:3:A Theusual'dleidisk 43av is journaled on the pivot 38 at the 'rearsifde off the anni 39. 'r .j

. Under norr'nal conditions, the arm 19 s held in [elevated p'osition,-so that the head 23 is 'out oli.inaction with the; conveyor fi'by screw 41 bei-ng engaged inthe nett-:H42

of the arm 20.V The passage of the peripheral edge of the detector 43 is" such that one sheet of paper can pass from the pile 6 to the conveyor 7 over the roller 8 and beneath the detector 43 without engaging said peripheral edge. This can be accomplished by adjusting the screw to elevate. or depress the pivot 38 on which the detector is carried. If, however, two or more sheets should simultaneously pass over the roller 8, the detector will be engaged by the upper sheet and caused to be turned thereby. This initial movement is free so that it will gain momentum, but when `the endfof the slot 44 strikes the pin 42a, the upper end ofthe arm 39 will be swung rearwardly, thus elevating the screw 41 out of the notch 42, releasing the rock shaft 15 andpermitting the head 23 to drop either onto the'conveyor 7 or on the excessive sheets carried thereby. .These sheets are therefore stopped. At the same time, the forward movement of the pin 42 y by thedetector causes the forwardmove# ment of the link 44, arm 13 and closure valve12. Thus the vent 11 is opened and suctionthrough thel conduit 10 is relieved by saidvent. Theresult is that the suction roller 9'is made inoperative.

Cooperating with the roller 8 are presser rollers 47.V These rollers are journaled on the free ends of; `arms 48 that are rotatably supported on the rock shaft 15. As shown, the journaled ends of the arms 48 are bifurcated as shown at 49, and in said bifurca tions are placed collars `50 secured to the shaft 15 by set screws 51. The collars have .pins 52 that are adapted to abut- Vagainst the undersides of the arms.

This structure. it will be noted therefore, permits the Arollers 47 toY coact with the shaft 8, andjto have limited play. When, however, the rock shaft 15 turns to permit the head 23 to drop. the arms 48 are swung upwardly by .reason of the pins 52 striking said arms and thusnthe Arollers 47 are elevated,relieving the sheets from being pressed upon the roller 8 and thus permitting the stopping of said sheets without stopping the roller 8;

From the foregoing, it is thought that the construction, operation and many advantages of the herein described inventionwill be apparent to those skilled in the art, wit-l1- out further description, and it willibeunderstood that various changes in the size, shape, proportion and minor details of construction may be resorted to Without departing from the spirit or sacrificing any of the advantages of the invention. 1

VWhat I claim is:

1. The combination with sheet conveying means, of a` sheet stop movable from an inactive position to a position vto engage and hold sheets carried bytheconveying means,

a detent detachably engaging the stop for cessive number of sheets carried by the conveying means and having a slot, and a de vice for `operating the detent to release the stop, said device having` a portion located in the slotfand adapted to beengaged and operated by the detector.

3. The4 combination with sheet ,conveying means,` of a sheet stop having a pivotal mounting and adapted to engage and hold sheets carried by the conveyingvmeans, a swinging detent that engages the stop to hold it in its inactive position, an actuating arm connected to the detent and having a pin, and an oscillatory detector having a slot in which the pin is engafed.

4, The combination with sheet conveyingr means, of a rock shaft thereover, a swinging stop lever carried by the rock shaft and and a detector mounted on said pivot and having a slot in which the pin is engaged.

5. The combination with sheet conveying means, of a rock'shaft thereover, a swinging stop lever carried by the rock shaft and extending on opposite sides of the same, a sheet stop finger yieldingly mounted on one arm, a swinging pivot mounting, means for adjusting said mounting, a pivot carried by the mounting, a second lever on the pivot havingan arm provided with a detent engaging the other arm of the stop lever to that-carrying the stop finger, the other arm of the second lever having a pin, and a detector mounted on said pivot and having a slot in which the pin is engaged.

,6. The combination with sheet'conveying means including a roller, of a pressure roller coactinar with said sheet conveying roller means including` a roller, of a pressure roller coacting with said sheet conveying roller and movable toward and from the same, a sheet stop movable into a position to engage and hold sheets carried by the co1iveyor, a detent for holding the stop out of such position and holding the pressure roller in coaction with the conveyor roller, and means operated by a plurality of sheets for moving the detent to permit the stop to move to its active position and the pressure roller to move to its inactive position.

8. The combination with sheet conveying means including a roller, of a rock shaft above the conveying means, a pressure roller having a mounting on the shaft and normally cooperating with the conveyor roller, a sheet stop also having a mounting on the rock shaft and normally out of the path of the sheets moved by the conveyor, and means including a detector operated by an excessive number of sheets for moving the rock siiaft to move the pressure roller out of coaction with the conveyor roller and move the stop into a position to engage the excessive sheets.

9. The combination with sheet conveying means including a roller, of a rock shaft above the conveying means, an arm carried by the rock shaft and projecting beyond one side of the same, a pressure roller on the arm and normally cooperating with the conveyor roller but movable away from the sameon the rotation of the rock shaft, another arm carried by the rock shaft and projecting from the opposite side thereof, a sheet stop carried by the latter arm and .movable toward the conveying means when the pressure roller is moved away from the.

conveyor roller, a detent for holding the rock shaft with the stop elevated and the roller lowered, and a device operated by an excessive number of sheets and operating the detent.

l0. The combination with sheet conveying means including a roller, of a rock shaft above the conveying means. an arm carried by the rock shaft and rotatable therewith, said arm projecting beyond one side of the rock shaft, a pressure roller on the arm and normally cooperating with the conveyor u roller, another arm carried the rock shaft communication therewith, said conduit having a relief port, of a movable closure for the relief port, a swinging sheet detector having al slot, a link connected to the closure, and a pin connected to the link and en.- gaged in the slot of the detector, said pin being normally spaced from the end of the v` slot that engages therpin when the detector is swung. Y

12. The combination with a conveyor including a transfer roller and a suction roller, ofy a rock shaft, an arm Xed tothe rock shaft, a sheet stop finger carried by the arm, a pressure roller mounted on the shaft and cooperating with the conveyor roller, a

swinging support, means for holding theV support in different positions, a detent journaled on the support and operating to hold the rock shaft against turning, a suction conduit for the suction roller having a vent, a movable closure for the vent, a connection between the closure and the detent, a swinging detector journaled on the support and having a slot, and a pin carried by the detent and engaged in the slot.

13. In sheet feeding means, a movable sheet carrying member, of a roller normally coacting Wit-h the member andmovable to a position out of coaction therewith, an operating device for moving the roller out of such coacting relation, a detent detachably engaging the operating device to,l hold it aga-inst action, and a device operated by an excessive number of sheets for moving the detent to release the operating device and permit it to effect the interruption of the feeding operation. i

In testimony whereof, I affix my signature. l

ALBERT BROADMEYER'. 

